A
c) C(−4, −7)
Unless specified otherwise, all angles are
between 0° and 360°.
y
12
1. Use a calculator. Evaluate each
trigonometric ratio. Round decimal
8
answers to four decimal places.
4
a) sin 8°
b) tan 321°
x
c) sin 144°
d) cos 44°
0
4
8
12
�12
�8
�4
e) cos 312°
f ) tan 68°
�4
g) tan 12°
h) sin 260°
�8
C(�4, �7)
�12
2. The coordinates of a point on the
terminal arm of an angle are
shown. Determine the exact primary
trigonometric ratios for .
d) D(6, −)
a) A(3, 4)
y
y
12
6
8
A(3, 4)
4
4
2
x
0
4
8
12
�12
�8
�4
x
0
2
4
6
�6
�4
�2
�4
D(6, �5)
�2
�8
�4
�12
�6
e) E(8, −2)
b) B(−, 2)
y
y
6
12
8
4
B(�5, 2)
2
4
x
x
0
2
4
6
0
4
8
12
�6
�4
�2
�12
�8
�4
E(8, �2)
�2
�4
�4
�8
�12
�6
978-0-07-090893-2 Mathematics for College Technology 12 Study Guide and Exercise Book • MHR
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